Finding out about our USDA Zone is one of the first things we do when we have a decent notion of our planting calendar.
The zone information is useful in providing information about our region’s lowest forecast temperature and typical date of the last frost.
It’s a smart idea to use the USDA zone information for Las Vegas to decide when it’s appropriate to plant peonies.
Planting Calendar for Peonies
Peonies’ resistance to frost
The ideal time to plant them is:
Peonies can be planted a little earlier in the year than other plants that can struggle in the cold because they tolerate very little cold.
If you don’t want to take any chances, you should really hold off until March.
Probably September is the last month to grow peony and anticipate a decent crop.
Your peony might not have the chance to reach maturity if you wait much longer.
Last Frost Date
Since Las Vegas’ actual date of last frost varies from year to year, the USDA zone information is not always reliable.
Make sure you are prepared to safeguard your peony if we see one of those late frosts because Las Vegas experiences a frost about 50% of the time after February 15.
Can peony thrive in warm weather?
Slideshow of 20 stunning peonies
What’s fresh: Herbaceous and tree peonies are crossed to create itoh hybrids, also known as intersectional hybrids. They can reach a height of 3 1/2 feet, produce flowers in lavender, pink, copper, yellow, or cream, and bloom for a longer period of time than typical herbaceous varieties.
Since their stems are more thicker and more sturdy than those of herbaceous species, they are effective in supporting large cups of petals.
Where to grow: Peonies do best in cooler regions (Sunset zones 111; A1A3), where the winters are particularly chilly. However, some will thrive in warmer environments (see list below). Under zones 1420, all are worthwhile attempts in dappled shade. There, give the plants plenty of water and midday shade.
When to plant: In late April in warmer climates, plant container-grown plants; in May or June in colder climates. In 5-gallon containers, 3-year-old peony should blossom more.
Spring or fall, from containers used for nurseries: Place the plant in the ground with the top of its rootball level with the dirt after loosening the soil and adding copious amounts of compost, being careful not to disturb the plant’s delicate feeder roots. Or move it into a sizable (18 to 24-inch diameter) container that is deeper on the outside than the inside.
Plant herbaceous peony roots with eyes 2 inches deep in cold climates and 1 inch deep in warmer climates in the fall. In cold climates, itoh hybrids should be planted 3 inches deep; in warmer climates, 2 inches deep.
How to feed and water: Water frequently. When the first leaves emerge in the spring, fertilize with a low-nitrogen fertilizer (such 5-10-10) and then once more when the final flower has faded.
When to pick: Cut stems just as flower buds start to open to harvest blossoms for bouquets; leave at least three leaves on the plant to feed it for the following year. Blooms will keep for up to a week in vases. Although Itoh hybrids generate more flowers per stem as the plants become older, the majority of cultivars only produce one bloom per stem.
After flowering, prune down herbaceous and Itoh hybrid peonies in the fall; fresh growth will appear in the spring.
Grab a peony.
For cold climates, pick: There are three new Itoh hybrids—crosses between tree peony and herbaceous peonies—called “Bartzella,” “Pink Double Dandy,” and “Yellow Doodle Dandy.” Bartzella has unusually enormous, bright yellow blooms.
Four herbaceous favorites for cool or warm climates include “Blaze,” a vivid red single, “Festiva Maxima,” a white double with crimson flecks in the middle, “Sarah Bernhardt,” or “Sea Shell” (satiny pink single).
Shop: Purchase plants (itoh hybrids can cost up to $100 at nurseries, while ordinary herbaceous can cost $40), beginning in late April in warm climates and May in chilly ones. Plants that are three years old and are housed in five-gallon containers will reliably blossom.
Visit and purchase: The 200 or so varieties of herbaceous and tree peonies at Chateau CharMarron Peony Gardens (5335 Sierra Rd., San Jose; 408/251-7048) begin flowering in late March and last through June. Visit Adelman Peony Gardens next month (May 1–Jun 15; 5690 Brooklake Rd. N.E., Salem, OR; 503/393-6185) to see 300 varieties spread across 10 acres.
Can peony be grown in arid climates?
This species, commonly known as desert holly, is the strangest of the desert peony. It frequently grows in small patches or even small colonies beneath trees or plants. Even when it goes dormant and its leaves are dry, it still has the appearance of a small holly plant because of the form of its leaves. It thrives in lower- to middle-elevation deserts. Flowers emerge in March and last until about June or perhaps longer, making them the earliest blooming members of our species. The blossoms have a violet-like smell that makes them fragrant. In less-than-perfect sites, plants will behave as annuals, while in optimal situations, they will behave as perennials. The most intriguing species is also the smallest; it can grow to a height of only a few inches or as little as a foot.
Can peony thrive at high elevations?
One of the simplest and longest-living perennials to plant is the herbaceous peony, which dies to the ground every fall. Peonies give gardens on the plains and in the high country texture and spring blossoms.
Peonies are developed from tubers or divided roots. The optimal time to divide the plants is in the fall. Dig at least a foot deep and around the plant. Wash the soil from the roots by lifting the plant. Sections of the root with three or more eyes or growth points should be cut. The root divisions should be replanted with the eyes one inch below the soil’s surface. Too deep of a planting results in very little, frail flowers or no flowers at all.
Peonies enjoy direct sunlight to light shade. They will flourish in nearly any soil. Compost should be used to deeply amend the soil because they have a lengthy lifespan. Peonies can reach heights and widths of one to three feet, depending on the type. Peonies can withstand cold and drought once they are established. They’ll thrive above 8,500 feet in altitude. Peonies bloom later the higher the elevation.
Peonies require support as soon as they begin to grow in the spring. The ideal cages are made of horizontal wire and may be raised as the plant develops. Support is crucial for double flowering types in particular. The blossoms fall to the ground unsupported because they are so heavy. Peonies can be debudded to produce larger, longer blooms. Flowers typically open in groups of three. The flowering period is extended when the two side buds are removed.
White, pink, red, and specks of these colors are among the shades of peony blooms that blossom. Even a yellow flower variant exists. Felix Crousse, a rose-red variety, Karl Rosenfield, a double pink, and Bowl of Beauty, a fragrant light pink, are a few to keep an eye out for. Every year, new hybrids become available. To border a bed, use a peony with trimmed leaves. Larger kinds can be used as focal or accent plants.
Large, beautiful, solitary blossoms characterize Japanese or anemone peony. The Japanese kinds are available in a variety of lovely pastel hues. They are equally resilient and resilient as other herbaceous peonies. Peonies with fern-like leaves give the cutting garden a delicate feel.
Peonies smell good. They are essential in the garden for cut flowers. Peonies can be used as highlights or as borders in the landscape. They require little maintenance and are simple to cultivate. In late May and early June, peonies bloom with striking beauty.
Every Saturday at 8:00 am, Tom Throgmorton of Throgmorton Plant Management can be heard on KRFC, 88.9 FM.
Best places to grow peonies?
The peony has the fattest, most delicious petals and rich green foliage, making it outrageously attractive when it is in bloom. From spring to summer, savor stunning floral displays. Learn how to care for, grow, and plant peony.
About Peonies
Peonies are a perennial that will steal your breath away every year. The plants may even outlive you—some have been reported to survive for at least a century.
When Is Peony Season? When Do Peonies Bloom?
Depending on your location and the kind you are planting, peonies bloom from late spring to early summer.
You may extend the peony season across several weeks and take use of those magnificent blossoms for as long as possible thanks to the abundance of nurseries that provide early, midseason, and late blooming types.
Peonies may thrive as far south as Zones 7 and 8, and they are hardy to Zone 3. The key to success in the majority of the United States is to provide full light and well-drained soil. Peonies even enjoy the winter’s coldness because it helps their buds grow.
Types of Peony Flowers
You can pick from six different varieties of peony flowers: anemone, single, Japanese, semi-double, double, and bomb. The odors of different plants also differ; some, like “Festiva Maxima” and “Duchesse de Nemours,” have seductive rose-like aromas, while others have a lemony scent or none at all.
Where to Plant Peonies
When planted as a low hedge or along sidewalks, peonies make excellent sentinels. As majestic and dignified as any flowering shrub, the peony’s bushy cluster of attractive glossy green leaves lasts all summer before turning purplish-red or gold in the fall.
Peonies work nicely with irises and roses in mixed borders and blossom alongside columbines, baptisias, and veronicas. Plant pink peonies with blue Nepeta or violets, then surround white peonies with yellow irises and a froth of forget-me-nots.
Peonies are not overly picky, but you should pick your place carefully because they dislike disruption and do not transplant well.
Although they can survive in partial shade, peonies like full sun, and they flower at their best in an area that receives 6 to 8 hours of sunlight per day.
Because of its huge flowers, peonies can become top-heavy in severe winds. Therefore, provide shelter. (If necessary, stakes can be used to hold them up.) Planting too close to trees or bushes will cause peony to compete with them for nutrients, sunlight, and moisture.
Grow peony in rich, wet, humus-rich soil that is deep, fertile, and well-draining. pH in the soil should be neutral.
When to Plant Peonies
As long as they are planted correctly and become established, peony plants require minimal upkeep. However, keep in mind that they do not adapt well to transplanting, so you should consider this when choosing your planting location.
- Plant peony in the fall: in the majority of the United States, in late September or early October, and even later in the fall in Zones 7 and 8. Your planting zone can be found here.
- If you need to move an established plant, the fall is the ideal season because the plant will be dormant.
- About six weeks before the ground freezes, peonies should be planted.
- While planting peonies in the spring is absolutely a possibility, the results aren’t always favorable. They often trail behind plants planted in the fall by roughly a year, according to experts.
How to Plant Peonies
- Peonies are typically offered as divisions of a 3- or 4-year-old plant, bare-root tubers with 3 to 5 eyes (buds).
- Peonies should be placed 3 to 4 feet apart to allow for enough air circulation. The development of disease can be facilitated by stagnant, damp air.
- In a sunny area, dig a generously sized hole that is about 2 feet deep and 2 feet wide. The inclusion of organic matter in the planting hole will improve the soil. Add additional compost to the soil to improve it if it’s sandy or heavy. Add about a cup of bonemeal to the ground. Find out more about soil improvements and getting the soil ready for planting.
- The roots should be positioned in the hole just 2 inches below the soil’s surface, with the root’s eyes facing upward on top of a mound of soil. Avoid planting too deeply! Choose early-blooming species, put them approximately 1 inch deep, and provide some shade in southern states.
- Backfill the hole after that, being careful to prevent soil settlement and a 2-inch root burying. Gently tamp the ground.
- Plant a container-grown peony no deeper than it was when it was in the pot.
- When planting, give everything plenty of water.
How to Care for Peonies
Young peony take time to develop, just like children. In order to establish themselves, blossom, and flourish, they typically require a few years. They eventually leave home on their own, fully grown and adjusted… No, that’s just kids, I suppose.
Peonies benefit from gentle neglect. They don’t require digging and dividing every few years like the majority of perennials do.
- Don’t use any fertilizer. Before planting, till the soil thoroughly while adding compost and a small amount of fertilizer.
- Early summer, after the peonies have flowered and you have deadheaded the blooms, is the ideal time to apply fertilizer (such as bonemeal, compost, or well-rotted manure) to a soil that is deficient in nutrients. Keep fertilizing to a few years at most.
- assist the stems Peonies’ stems, which occasionally are not strong enough to hold their enormous blossoms, are the only part of their structure that may be considered weak. Think of structures that allow the plant to grow through the middle of the support, like three-legged metal peony rings or wire tomato cages.
- Peony blossoms should be deadheaded as soon as they start to fade, cutting to a sturdy leaf so that the stem doesn’t protrude through the foliage. To prevent any infections from overwintering, trim the foliage to the ground in the fall.
- Avoid covering peonies with mulch. For the first winter following planting, you can VERY LOOSELY mulch with pine needles or shredded bark when the winters are bitterly cold. In the spring, get rid of the mulch.
Peonies bloom between late spring and early summer, but by planting a variety of cultivars, you may arrange your garden for a succession of blooms from mid-May to late June. Here are a few options:
- ‘Early Scout’ has red solitary flowers that open incredibly early.
- “Firelight”: very early-blooming, single, pale-pink flowers
- ‘Karl Rosenfield’: double, midseason bloomer with substantial crimson blooms
What degree of heat can a peony endure?
While tree peonies and some early-blooming herbaceous and intersectional varieties do well in moderate areas, where they bloom from late April to early June, all peonies prefer lengthy, frigid winter temperatures. Festiva Maxima, a creamy white intersectional with pink undertones, and the rosy “Sarah Bernhardt” are two herbaceous early bloomers. “Bartzella,” a lemony yellow intersectional, will also fall dormant in climates where winter days are not frequently bitterly cold.
The majority of peony require prolonged winter chill, which is defined as periods of time when temperatures are between freezing and no higher than 45 degrees F. Most peony require 480 cool hours or more to achieve a suitable dormancy.
Herbaceous species of the three types of peony require the most hours of darkness. Herbaceous species are more likely to become dormant in mild climates if planted no deeper than 1 inch below the surface of the soil. There has to be considerably deeper planting of intersectional species and trees.